Paul and Kawa investigate a UFO crash site in Argentina and eyewitness accounts of mysterious men in black; Sarah and Nick track a pattern of low altitude UFOs in Phoenix and a 1947 crash with secretive connections to Roswell.

The team discovers recent video of a fast-moving UFO and uncovers hostile acts by UFOs.

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Secret documents from a military investigation lead Myke and Dr. Livingston to recordings of "fast movers" by the US and Russian Navy. As link analysis flags an encounter with a US Supercarrier, Sarah and Nick hunt down the holy grail of eyewitnesses.

At a turning point in UFO history, six experts deploy CIA-developed link analysis software, special ops intelligence training and boots-on-the-ground journalism in an unprecedented global investigation to determine if aliens have made contact with Earth.

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A breakthrough linking UFOs and seismic activity leads Nick and Sarah to alien evidence in a remote jungle in Mexico. Paul and Kawa investigate an encounter captured by military cameras and gain unprecedented access to foreign government files.

Link analysis patterns lead Nick and Sarah to a site where they uncover ancient evidence of human contact with aliens; investigating Argentina's most credible military encounter, Paul and Kawa track down an eyewitness and the presence of NASA.